Start at the DB board: what a trip is actually telling you
Every UAE home has a distribution board (DB), usually a grey or white panel near the entrance or in the corridor. Inside sit a main isolator, one or more RCDs (residual current devices, the wide switches with a test button) and a row of MCBs, the small breakers that each protect one circuit: kitchen sockets, bedroom sockets, lighting, the water heaters, the AC units. When something trips, which switch went down tells you most of the story before anyone picks up a phone.
There is one safe DIY step: unplug everything on the affected circuit, reset the breaker, and reintroduce appliances one at a time. If the breaker holds until a specific device goes back in, you have found your culprit. If it snaps back instantly with nothing plugged in, or you notice a burning smell or a breaker that feels warm, stop resetting it and book a professional. Repeatedly forcing a breaker that wants to trip is how melted DB buswork happens.